Updated Jul 22, 2019 - Energy & Environment

In photos: "Dangerous" heat wave grips much of the U.S.

A US flag flies overhead as people enjoy the Astoria Pool on a hot afternoon in the borough of Queens, New York City, on July 20.

Astoria Pool in Queens, New York. Photo: Johannes Eisele/AFP/Getty Images

An "oppressive and dangerous" heat wave has gripped much of the U.S., with a large number of heat warnings in place this weekend, the National Weather Service says.

Details: As a cold front moved in to the Midwest Sunday, the NWS warned people on the East Coast to expect sweltering conditions to continue until Monday or Tuesday. Here's how some people are coping with the extreme weather, in photos.

People cool off downtown in Crown Fountain as temperatures climb into the 90's with a heat index expected to reach as high as 115 degrees on July 19.
The Crown Fountain is a popular destination for people in Chicago, Illinois. Photo: Scott Olson/Getty Images
Fans try to cool off under an umbrella during the game between the Baltimore Orioles and the Boston Red Sox at Oriole Park at Camden Yards on July 21, 2019 in Baltimore, Maryland.
Fans watch the Baltimore Orioles-Boston Red Sox game at Oriole Park at Camden Yards, Baltimore, Maryland. Photo: Will Newton/Getty Images
 A child plays in a waterfall at Yards Park in Washington, D.C.
A child plays in a waterfall at Yards Park in Washington, D.C. Photo: Saul Loeb/AFP/Getty Images
Swimmers at 31st Street Beach in Chicago, Illinois.
Swimmers at 31st Street Beach in Chicago, Illinois. Photo: Scott Olson/Getty Images
Heat waves rise from the Washington and Old Dominion Trail as Susan Stone Lee, vacationing from Waco, Texas, walks her dog, Waffles, on Tuesday.
A woman walks her dog in Reston, Virginia. Photo: Jahi Chikwendiu/The Washington Post via Getty Images.
As a heat wave descends upon the city, people seek refuge from the record high temperatures at the fountains in Flushing Meadows Park on July 21, 2019 in the Queens borough of New York City
Fountains in Flushing Meadows Park in the Queens borough of New York City. Photo: Andrew Lichtenstein/Corbis via Getty Images
 People visit the beach on July 20, 2019 in Ocean Grove, New Jersey.
People flock to the beach at Ocean Grove, New Jersey. Photo: Kena Betancur/Getty Images
Bathers swim at Wissahickon Valley Park on July 20.
Bathers at Wissahickon Valley Park in Philadelphia, Pennsylvania. Photo: Mark Makela/Getty Images
Karim Benzema #9 of Real Madrid shoots the ball against Manuel Neuer #1 of Bayern Munich during the first half in the 2019 International Champions Cup at NRG Stadium in Houston, Texas.
Bayern Munich beat Real Madrid 3-1 in the 2019 International Champions Cup soccer game, as the temperature climbed into triple figures and the NWS Houston warned of "muggy" conditions.
Ally McDonald (left) pours a drink on Jasmine Suwannapura of Thailand after winning the Dow Great Lakes Bay Invitational at Midland Country Clubin Midland, Michigan, on Saturday.
Ally McDonald pours a drink on Thailand's Jasmine Suwannapura after Suwannapura won the Dow Great Lakes Bay Invitational in Midland, Michigan. Photo: Jorge Lemus/NurPhoto via Getty Images

This article has been updated with more photos and further details on the weather.

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